I'm starting a new problem.
As the title says it's a FullWave rectifier with centertap transformer problem.
Teacher is asking us to plot the waveform at the rectifier entrance, the waveform across the load and the current waveform at the diodes.
Check the attached circuit/screen.
The info we have from teacher is:
230V
1kHz
10:1 ratio.
Vdiodes = 0.7V
R_load = 500Ω
The first thing I did was to find the amplitude of the rectifier input waveform as:
(230√2)/(10*2) = 16.26V
Then the voltage drop across the load will have Vd drop so:
V_out = 16.26  0.7 = 15.56V
Then I need to find at what time the diodes starts conducting using the following formula:
Vin*sin (ω*t1) = Vd
⇔16.26*sin (2*π*1000*t1) = 0.7
⇔sin (2000*π*t1) ≅ 0.0431
⇔2000*π*t1 = arcsin (0.0431)
⇔t1 ≅ 6.8538 μS
Then t2 = 0.5mS  6.854μS = 0.4931mS
Please someone help me confirming the calcs with LTSpice!
Thanks
As the title says it's a FullWave rectifier with centertap transformer problem.
Teacher is asking us to plot the waveform at the rectifier entrance, the waveform across the load and the current waveform at the diodes.
Check the attached circuit/screen.
The info we have from teacher is:
230V
1kHz
10:1 ratio.
Vdiodes = 0.7V
R_load = 500Ω
The first thing I did was to find the amplitude of the rectifier input waveform as:
(230√2)/(10*2) = 16.26V
Then the voltage drop across the load will have Vd drop so:
V_out = 16.26  0.7 = 15.56V
Then I need to find at what time the diodes starts conducting using the following formula:
Vin*sin (ω*t1) = Vd
⇔16.26*sin (2*π*1000*t1) = 0.7
⇔sin (2000*π*t1) ≅ 0.0431
⇔2000*π*t1 = arcsin (0.0431)
⇔t1 ≅ 6.8538 μS
Then t2 = 0.5mS  6.854μS = 0.4931mS
Please someone help me confirming the calcs with LTSpice!
Thanks
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